68930530289 has 2 divisors, whose sum is σ = 68930530290. Its totient is φ = 68930530288.

The previous prime is 68930530223. The next prime is 68930530301. The reversal of 68930530289 is 98203503986.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62207842225 + 6722688064 = 249415^2 + 81992^2 .

It is a cyclic number.

It is not a de Polignac number, because 68930530289 - 2²⁰ = 68929481713 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68930530289.

It is not a weakly prime, because it can be changed into another prime (68930536289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34465265144 + 34465265145.

It is an arithmetic number, because the mean of its divisors is an integer number (34465265145).

Almost surely, 2^68930530289 is an apocalyptic number.

It is an amenable number.

68930530289 is a deficient number, since it is larger than the sum of its proper divisors (1).

68930530289 is an equidigital number, since it uses as much as digits as its factorization.

68930530289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2799360, while the sum is 53.

The spelling of 68930530289 in words is "sixty-eight billion, nine hundred thirty million, five hundred thirty thousand, two hundred eighty-nine".